- Manufacturer (registry)
- LYCOMING
- Model
- O-360-A4A
- Registry code
- 42270
- Installed in
- 63 registered aircraft
- Type
- Reciprocating
- Power
- 180 hp
- Data sheet
- TCDSE-286
- Holder
- Lycoming Engines
Model codes come from the FAA registry’s reference file.
On this page
Airworthiness directives that may apply · 26
ADs whose products match this engine model. Each AD’s applicability may narrow it by serial number, part number or configuration.
| 1963 | 1 |
|---|---|
| 1966 | 1 |
| 1967 | 1 |
| 1969 | 2 |
| 1977 | 2 |
| 1980 | 1 |
| 1982 | 1 |
| 1989 | 2 |
| 1991 | 1 |
| 1992 | 1 |
| 1995 | 1 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 1 |
| 2004 | 1 |
| 2006 | 3 |
| 2007 | 1 |
| 2008 | 1 |
| 2010 | 1 |
| 2012 | 2 |
| 2017 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Engine · Lycoming O-360-A4A
AD 2026-04-11Engine (Reciprocating)AD 2017-16-11Reciprocating Engine Power SectionAD 2012-19-01CrankshaftsQuery with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('42270'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('42270'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Information bulletins that may apply · 5
Engine · Lycoming O-360-A4A
SAIB NE-19-08Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve CylindersSAIB NE-08-32R1Propeller Governor Idler Gear Shaft Set ScrewSAIB NE-14-13Reciprocating Engine - Cylinder Mounting StudsSAIB NE-13-06Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series EnginesSAIB NE-06-32R1Reciprocating Engine - CrankshaftHistorical bulletins · 1
Query with SQL
duckdb -csv -c "SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_saib.parquet' WHERE engine_model_code IN ('42270'))
GROUP BY s.saib_number ORDER BY issue_date DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_saib.parquet' WHERE engine_model_code IN ('42270'))
GROUP BY s.saib_number ORDER BY issue_date DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Registered aircraft · 63
N100HRSouthern Aircraft Consultancy Inc Trustee · Casper, WYN111AQualitair LLC Trustee · MichelstadtN119TBFlint Kelley C · Tulsa, OK
See all 63 registered aircraftQuery with SQL
duckdb -csv -c "SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
WHERE engine_model_code IN ('42270')
ORDER BY n_number"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
WHERE engine_model_code IN ('42270')
ORDER BY n_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB investigations · 9
Aircraft matched to this engine model through the registry, by N-number and event date, checked against the reported serial number, make and model.
Of 6 cases NTSB coded with a defining event. All defining events
Findings NTSB made part of the probable cause. A case can have several. All findings
Of 2 cases with NTSB’s older coding, defined in its coding manual.
NTSB CEN14CA189Accident · Minor injuriesData collectionFinal reportBelisle Thomas J RV7A · New Iberia, LAThe pilot's loss of control due to a temporary incapacitation.NTSB ANC14CA015Accident · Minor injuriesData collectionFinal reportCraig C Walls Snowyriver Special · Wasilla, AKThe pilot's failure to maintain directional control after landing, resulting in a nose over.NTSB ERA13LA434Accident · 1 fatalLimited investigationFinal reportTimothy J Cowper Pitts Special S-1E · Edinburg, NYThe pilot’s failure to maintain adequate airspeed during low-altitude maneuvering, which resulted in the airplane exceeding its critical angle-of-attack and experiencing an aerodynamic stall.NTSB ANC12CA050Accident · No injuriesData collectionFinal reportWalls Craig C Snowyriver Special · Chugiak, AKThe pilot’s improper fuel planning, which resulted in fuel exhaustion and a total loss of engine power during descent.NTSB CEN11CA423Accident · No injuriesData collectionFinal reportHendricks George David JR RV8 · Angel Fire, NMThe pilot's loss of directional control during landing.NTSB LAX08CA215Accident · Minor injuriesData collectionFinal reportCessna 150J · Seal Beach, CAFuel starvation due to the pilot's improper fuel management procedures and failure to select a tank containing fuel. Contributing to the accident was the lack of suitable terrain for the forced landing.NTSB NYC08CA066Accident · No injuriesData collectionFinal reportPiper PA28-180 · Blue Bell, PAThe student pilot's failure to maintain directional control while landing.NTSB NYC05LA144Accident · Serious injuriesLimited investigationFinal reportPiper PA-28-180 · Millville, NJThe flight instructor's improper in-flight decision to perform a emergency landing to a runway, with a tailwind, and his failure to maintain airspeed after aborting that landing, which resulted in an inadvertent stall and subsequent impact with terrain.…NTSB CHI69D0394Accident · No injuriesClosedPiper PA-28 · Wheeling, IL
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
WHERE a.engine_model_code IN ('42270')
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = a.case_mkey
WHERE a.engine_model_code IN ('42270')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
FAA incident reports · 10
Matched to this engine model through the registry, by N-number and event date, checked against the reported make and model.
Incident 20140501005259IPiper PA-28-180 · Wichita, KSOn may 1st, 2014, at approximately 1327, UTC, , the commercial pilot with airplane single engine land and instrument airplane ratings failed to maintain directional control while landing a Piper PA-28-180 , resulting in a runway excursion into the grass.…Accident 20140405005779ABelisle Thomas J RV7A · New Iberia, LAAircraft made right base turn to runway 34. On approach, aircraft flew down centerline of runway 34 for approximately 1000 feet then began drifting to the right crossing the paralell taxi way while descending. The aircraft contacted the ground flipping…Accident 20140205001139AWalls Craig C Snowyriver Special · Wasilla, AKThe weather at the time of this accident was VFR, with clear skies and no wind. According to the pilot, it was the perfect day to fly. The pilot also reported that the condition of the landing strip was in great condition. The landing strip is gravel, and was…Accident 20130929020759ATimothy J Cowper Pitts Special S-1E · Edinburg, NYThe aircraft departed Edinburg airport to the west, turned left, flew around the airport, and during climb and leaving the area to the west, the aircraft turned to the right as to return to the airport. Then the aircraft pitched down, then pitched up, then…Accident 20120603015489AWalls Craig C Snowyriver Special · Birchwood, AK06/03/2012 - PIC departed merrill field airport (pamr) at approx. 0910 ast on a 14 CFR part 91 flight intending to land at Birchwood Airport (pabv). Aircraft was reported to have made an off-field, emergency landing, on the old glenn highway near north…Accident 20110624011419AHendricks George David JR RV8 · Angel Fire, NMOn June 24, 2011 at 1102 MDT, N678VR, an RV-8 amateur built aircraft, departed the right side of runway 17 at the Angel Fire, NM airport while landing in a crosswind reported as 260 degrees at 16 knots gusting to 24 knots. As the pilot was trying to stop the…Accident 20080704840719ACessna 150J · Seal Beach, CA(-23) Pilot departed compton woodley airport (cpm) with full fuel load in the wings 18 gallons each wing 36 gallons total. Few approximately 1 hour and 45 minutes performing banner towing operations without changing fuel tanks. Engine quit and the aircraft…Accident 20071220831279APiper PA28180 · Philadelphia, PA(-23) On the student pilot's second solo landing of his first solo flight he compensated for a slight crosswind with left rudder. After touch down with left rudder still being applied the aircraft departed the runway and struck two signs and an embankment…Accident 20050920032329APiper PA28180 · Millville, NJ(-23) Pilot reported engine trouble on takeoff, attempted to circle and return on runway 28. Struck the ground approximately 100 yards north of runway center and slid into the tree line. Inspection of engine revealed #3 cylinder had no compression due to a…Incident 19900720040899IAmtrpt PITTSSPECS1 · Hancock, NYLow on fuel due to flying around deteriorating weather. Precautionary landing on highway.
Query with SQL
duckdb -csv -c "SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
WHERE engine_model_code IN ('42270')
ORDER BY event_date DESC, report_number DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
WHERE engine_model_code IN ('42270')
ORDER BY event_date DESC, report_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Service difficulty reports · 75
SDR 2025FA0000663Valve · failed inspDURING ROUTINE 100 HR INSPECTION FOUND COMPRESSION TO BE 40/80 ON CYLINDER #4 AND INSPECTED FURTHER. FOUND THAT VALVE WAS NOT SEATING PROPERLY. VALVE SEAT WAS BELL MOUTHED, VALVE PUSHES IN AN OUT ON A CURVE RATHER THAN STRAIGHT, WORN ONLY ON ONE SIDE. IMPROPSDR 2024FA0000435Case · crackedON CLIMB TO CRUISING ALTITUDE PIC FELT AN ENGINE VIBRATION AND DECIDED TO TURN BACK TO KARG. ON TURN BACK TO DEPARTURE AIRPORT OIL PRESSURE DROPPED TO "0" AND ENGINE SEIZED. POST EMERGENCY LANDING, ENGINE COWLING WAS REMOVED, HOLE IN CRANKCASE FOUND ON FORWARDSDR 2024FA0000421Screw · looseOWNER COMPLAINED OF A ROUGH RUNNING ENGINE. DIAGNOSIS FOUND THE BEARING CAP ASSEMBLY MOUNTING SCREWS HAS COME LOOSE ON THE RH MAGNETO.ONE SCREW AND RETAINER HAS FALLEN COMPLETELY OUT. THE BEARING CAP ASSEMBLY WAS FREELY ROTATING 5-10 DEGREES ALLOWING THE MAGNE
See all 75 difficulty reportsQuery with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'O360A4A' ORDER BY difficulty_date DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'O360A4A' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
STCs that may be installed · 39
Approved for this engine model: the STC’s model list names it on its data sheet, or a series that includes it. The registry doesn’t record which STCs an aircraft has.
STC SE04651CHTo allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22STC SE00825WIInstallation of Specialty Products Spin-on oil filter on Lycoming Engines.STC SE208SOInstallation of ice indicator in the carburetor.
See all 39 STCsQuery with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet'
WHERE engine_model_code IN ('42270')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet'
WHERE engine_model_code IN ('42270')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.